US4697884B1 - - Google Patents

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Publication number
US4697884B1
US4697884B1 US90866786A US4697884B1 US 4697884 B1 US4697884 B1 US 4697884B1 US 90866786 A US90866786 A US 90866786A US 4697884 B1 US4697884 B1 US 4697884B1
Authority
US
Grant status
Grant
Patent type
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Amstutz Hermann
Heimgartner Dieter
Kaufman Meinolph
J Scheffer Terry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB SWITZERLAND HOLDING Ltd
Original Assignee
BBC BROWN BOVERI AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date
Family has litigation

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    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/137Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering
    • G02F1/139Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1396Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
    • G02F1/1397Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating, or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by a particular electro- or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction, dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell the twist being substantially higher than 90°, e.g. STN-, SBE-, OMI-LC cells
US4697884B1 1983-07-12 1986-09-17 Expired - Lifetime US4697884B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH381983A CH664027A5 (en) 1983-07-12 1983-07-12 LCD with twisted nematic crystal between support plates
CH3819/83 1983-07-12
CH5835/83 1983-10-28
CH583583A CH665491A5 (en) 1983-10-28 1983-10-28 LCD with twisted nematic crystal between support plates

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06626380 Continuation US4634229A (en) 1983-07-12 1984-06-29 Liquid crystal display

Publications (2)

Publication Number Publication Date
US4697884A US4697884A (en) 1987-10-06
US4697884B1 true US4697884B1 (en) 1990-08-28

Family

ID=25693920

Family Applications (2)

Application Number Title Priority Date Filing Date
US06626380 Expired - Lifetime US4634229A (en) 1983-07-12 1984-06-29 Liquid crystal display
US4697884B1 Expired - Lifetime US4697884B1 (en) 1983-07-12 1986-09-17

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US06626380 Expired - Lifetime US4634229A (en) 1983-07-12 1984-06-29 Liquid crystal display

Country Status (8)

Country Link
US (2) US4634229A (en)
EP (1) EP0131216B1 (en)
KR (1) KR900008064B1 (en)
CA (1) CA1242784A (en)
DE (2) DE3467044D1 (en)
FR (1) FR2549268B1 (en)
GB (1) GB2143336B (en)
NL (1) NL8402189A (en)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904060A (en) * 1987-11-23 1990-02-27 Asulab, S.A. Liquid crystal display cell having a diffusely-reflective counter electrode
US4906073A (en) * 1987-07-29 1990-03-06 Hitachi, Ltd. Liquid crystal display device using nematic liquid crystal having twisted helical structure and a phase correction plate
US4917465A (en) * 1989-03-28 1990-04-17 In Focus Systems, Inc. Color display system
US4923286A (en) * 1986-02-27 1990-05-08 Asulab S.A. Display cell
US4936654A (en) * 1988-01-28 1990-06-26 Sanyo Electric Co., Ltd. Liquid crystal display device
US4941737A (en) * 1987-10-07 1990-07-17 Sharp Kabushiki Kaisha Liquid-crystal display device using twisted nematic liquid crystal molecules
US4957349A (en) * 1987-04-06 1990-09-18 Commissariat A L'energie Atomique Active matrix screen for the color display of television pictures, control system and process for producing said screen
US4973137A (en) * 1987-11-04 1990-11-27 Sharp Kabushiki Kaisha Liquid crystal display device with compensation layers
US4991924A (en) * 1989-05-19 1991-02-12 Cornell Research Foundation, Inc. Optical switches using cholesteric or chiral nematic liquid crystals and method of using same
US4999619A (en) * 1987-06-10 1991-03-12 U.S. Philips Corporation Electro-optic display device for use in the reflection mode
US5044735A (en) * 1985-11-29 1991-09-03 Konishiroku Photo Industry Co., Ltd. Liquid crystal display device for providing sufficiently high contrast ratio and excellent response time
US5050965A (en) * 1989-09-01 1991-09-24 In Focus Systems, Inc. Color display using supertwisted nematic liquid crystal material
US5054910A (en) * 1988-10-04 1991-10-08 Sharp Kabushiki Kaisha Projection apparatus
US5058998A (en) * 1988-09-16 1991-10-22 Casio Computer Co., Ltd. Liquid crystal display devide with a twisted alignment state
US5071228A (en) * 1988-12-24 1991-12-10 Nokia Unterhaltungselektronik Black-white liquid crystal display having an insulation layer for blocking the diffusion of sodium ions from the glass of the cell plate to the polyphenylene of the orientation layer
US5089810A (en) * 1990-04-09 1992-02-18 Computer Accessories Corporation Stacked display panel construction and method of making same
US5093741A (en) * 1989-10-06 1992-03-03 Kabushiki Kaisha Toshiba Liquid crystal display device
US5099345A (en) * 1987-03-10 1992-03-24 Sharp Kabushiki Kaisha Colored liquid-crystal display device having supertwisted nematic liquid crystal and color filters
US5105289A (en) * 1988-07-14 1992-04-14 Seiko Epson Corporation Reflection type electrooptical device and a projection type display apparatus using the same
US5119220A (en) * 1988-01-28 1992-06-02 Sanyo Electric Co., Ltd. Liquid crystal display device with a phase plate for shadow compensation
US5153568A (en) * 1988-07-21 1992-10-06 Proxima Corporation Liquid crystal display panel system and method of using same
US5184156A (en) * 1991-11-12 1993-02-02 Reliant Laser Corporation Glasses with color-switchable, multi-layered lenses
US5302946A (en) * 1988-07-21 1994-04-12 Leonid Shapiro Stacked display panel construction and method of making same
US5327269A (en) * 1992-05-13 1994-07-05 Standish Industries, Inc. Fast switching 270° twisted nematic liquid crystal device and eyewear incorporating the device
US5432624A (en) * 1993-12-03 1995-07-11 Reliant Technologies, Inc. Optical display unit in which light passes a first cell, reflects, then passes a second cell
US5550664A (en) * 1993-12-24 1996-08-27 Sharp Kabushiki Kaisha Liquid crystal display device
US5579142A (en) * 1994-10-14 1996-11-26 Sharp Kabushiki Kaisha Liquid crystal display device having pleochroic dye and particular relationship of ratio d/po and twist angle
US5619356A (en) * 1993-09-16 1997-04-08 Sharp Kabushiki Kaisha Reflective liquid crystal display device having a compensator with a retardation value between 0.15 μm and 0.38 μm and a single polarizer
US5696570A (en) * 1992-04-16 1997-12-09 Merck Patent Gesellschaft Mit Beschrankter Haftung TN cell having improved display of grey shades
US5876626A (en) * 1988-10-20 1999-03-02 Merck Patent Gesellschaft Mit Beschrankter Haftung Supertwist liquid crystal display
US5986732A (en) * 1995-01-23 1999-11-16 Asahi Glass Company Ltd. Color liquid crystal display apparatus
USRE36654E (en) * 1989-03-28 2000-04-11 In Focus Systems, Inc. Stacked LCD color display
US6094252A (en) * 1995-09-05 2000-07-25 Sharp Kabushiki Kaisha GH LCD having particular parameters and characteristics
US6258443B1 (en) 1994-09-28 2001-07-10 Reflexite Corporation Textured retroreflective prism structures and molds for forming same
US20040021818A1 (en) * 1966-05-09 2004-02-05 Yuka Utsumi Active matrix type liquid crystal display apparatus
US6714276B2 (en) * 2000-02-08 2004-03-30 Sharp Kabushiki Kaisha Liquid crystal display device
US6727968B1 (en) * 1997-10-08 2004-04-27 Hewlett-Packard Development Company, L.P. Liquid crystal device alignment
US20040080694A1 (en) * 1992-06-30 2004-04-29 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device
US20110019112A1 (en) * 1991-02-21 2011-01-27 Gene Dolgoff Projection System with Enhanced Brightness

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4596446B2 (en) * 1982-06-29 1997-03-18 Secr Defence Brit Liquid crystal devices with particular cholestric pitch-cell thickness ratio
JPS6050511A (en) * 1983-08-31 1985-03-20 Hitachi Ltd Liquid crystal display element
JPH0438328B2 (en) * 1985-02-22 1992-06-24
JPS61210324A (en) * 1985-03-15 1986-09-18 Hitachi Ltd Liquid crystal display element
JPH0656459B2 (en) * 1985-04-05 1994-07-27 株式会社日立製作所 The liquid crystal display element
CA1281114C (en) * 1985-09-25 1991-03-05 Kokichi Ito Liquid crystal electro-optical element with adhesive particles
US5215677A (en) * 1985-09-27 1993-06-01 Sanyo Electric Co., Ltd. Liquid crystal display device
DE3684977D1 (en) * 1985-09-27 1992-05-27 Sanyo Electric Co Fluessigkristallanzeigevorrichtung.
JPS62194224A (en) * 1986-02-20 1987-08-26 Sharp Corp Twisted nematic type liquid crystal display element
US4726659B1 (en) * 1986-02-24 1990-04-10 Rca Corp
DE3609141A1 (en) * 1986-03-19 1987-09-24 Merck Patent Gmbh Electro-optical display element
US5188758A (en) * 1986-03-19 1993-02-23 Merck Patent Gesellschaft Mit Beschraenkter Haftung Electrooptical display element using a supertwist liquid crystal having specified elastic constants
DE3752219D1 (en) * 1986-05-19 1998-10-29 Seiko Epson Corp A liquid crystal display device
US4776674A (en) * 1986-06-25 1988-10-11 American Telephone And Telegraph Company, At&T Bell Laboratories Liquid crystal device with chemically-induced high-tilt alignment coating
US4779958A (en) * 1986-06-28 1988-10-25 Kabushiki Kaisha Toshiba Liquid crystal device having different natural and induced twists
US4818074A (en) * 1986-09-03 1989-04-04 Ricoh Company, Ltd. Projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom
JP2676508B2 (en) * 1986-09-12 1997-11-17 コニカ株式会社 The liquid crystal display device
ES2028833T3 (en) * 1986-09-12 1992-07-16 F. Hoffmann-La Roche Ag indicator liquid crystal cell.
JPS63167331A (en) * 1986-12-29 1988-07-11 Sharp Corp Twisted nematic liquid crystal display element
JPS63234225A (en) * 1987-03-23 1988-09-29 Sharp Corp Liquid crystal display device
JPS6421416A (en) * 1987-07-17 1989-01-24 Hitachi Ltd Liquid crystal display element
US5044733A (en) * 1987-08-19 1991-09-03 Ricoh Company, Ltd. Super twisted nematic liquid crystal display device having the standard deviation of the spherical grains being not more than 3% and the dispersion quantity of the spherical grains being 100-200 grains/mm2
DE3887436T2 (en) * 1987-10-13 1994-05-11 Fujitsu Ltd Liquid crystal display panel.
JPH07117664B2 (en) * 1987-12-03 1995-12-18 シャープ株式会社 The liquid crystal display device
DE3741997C2 (en) * 1987-12-11 1997-07-17 Vdo Schindling A method of driving an STN liquid crystal cell
DE3807958B4 (en) * 1988-03-10 2004-03-18 Merck Patent Gmbh Super twisted liquid crystal display element
DE3835803A1 (en) * 1988-03-10 1990-04-26 Merck Patent Gmbh Super Twist fluessigkristallanzeigeelement and fluessigkristallmischung
US5082353A (en) * 1988-05-11 1992-01-21 Kabushiki Kaisha Toshiba Liquid-crystal display apparatus
JP2621385B2 (en) * 1988-07-06 1997-06-18 セイコーエプソン株式会社 Electro-optical device
DE68918192T2 (en) * 1988-07-19 1995-03-16 Sharp Kk Double-layer liquid crystal display device.
US4944578A (en) * 1988-07-21 1990-07-31 Telex Communications Color graphic imager utilizing a liquid crystal display
DE3835804B4 (en) * 1988-10-20 2006-12-28 Merck Patent Gmbh Nematic liquid crystal mixture
JP2784205B2 (en) * 1989-04-14 1998-08-06 コニカ株式会社 Transmission type liquid crystal display device
US5229031A (en) * 1989-05-17 1993-07-20 Seiko Epson Corporation Liquid crystal display device
DE3923064B4 (en) * 1989-07-13 2004-08-05 Merck Patent Gmbh Liquid crystal mixture containing them super twisted liquid crystal display
JP2924055B2 (en) * 1989-12-08 1999-07-26 セイコーエプソン株式会社 Reflective liquid crystal display element
JPH03248121A (en) * 1991-02-08 1991-11-06 Hitachi Ltd Liquid crystal display element
JP2717731B2 (en) * 1991-02-08 1998-02-25 株式会社日立製作所 The liquid crystal display element
DE69318865D1 (en) * 1992-03-03 1998-07-09 Matsushita Electric Ind Co Ltd Twisted nematic liquid crystal display device of active matrix
JP3634390B2 (en) * 1992-07-16 2005-03-30 セイコーエプソン株式会社 Liquid crystal electro-optical element
US5574583A (en) * 1994-08-02 1996-11-12 Hyundai Electronics Industries Co. Ltd. Liquid crystal display device having a compensation layer and method for fabricating the same
DE69526505D1 (en) 1995-05-17 2002-05-29 Seiko Epson Corp Liquid crystal display device and process and control circuitry to control their
JPH0850271A (en) * 1995-07-10 1996-02-20 Hitachi Ltd Liquid crystal display element
US5731404A (en) 1995-11-01 1998-03-24 E. I. Du Pont De Nemours And Company Polyimide film from pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound as an alignment layer for liquid crystal displays
GB9608175D0 (en) * 1996-04-19 1996-06-26 Ncr Int Inc Method of controlling veiwability of a display screen and a device therefor
WO1997043685A1 (en) 1996-05-10 1997-11-20 Citizen Watch Co., Ltd. Liquid crystal shutter and its driving method
JP3722920B2 (en) * 1996-08-27 2005-11-30 株式会社リコー Plastic film liquid crystal display element
DE10253874A1 (en) * 2002-11-12 2004-05-27 Carl Zeiss Smt Ag Method for forming optical functional component for adjusting micro lithographic projection illumination installations, using charge coupled device (CCD) camera
CN101441365B (en) 2005-04-18 2010-11-03 胜华科技股份有限公司 Bistable state liquid crystal display apparatus
DE102009017301A1 (en) 2009-02-21 2010-08-26 Robert Bosch Gmbh Gear transmission having disposed on a hollow shaft gear
FR2988223B1 (en) 2012-03-19 2016-09-02 Solarwell Device emitting light containing colloidal nanocrystals flattened anisotropic semiconductor and method of manufacturing such devices
EP2828194A1 (en) 2012-03-19 2015-01-28 Nexdot Light-emitting device containing flattened anisotropic colloidal semiconductor nanocrystals and processes for manufacturing such devices

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FR2356173A1 (en) * 1976-06-21 1978-01-20 Gen Electric A method for improving the fall time of a display device has nematic liquid crystal composition helically
JPS5352140A (en) * 1976-10-22 1978-05-12 Hitachi Ltd Liquid crystal display device
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JPS56156817A (en) * 1980-05-09 1981-12-03 Hitachi Ltd Liquid-crystal display element
GB2087583B (en) * 1980-10-20 1984-06-06 Western Electric Co Bistable liquid crystal twist cell
US4505548A (en) * 1980-10-20 1985-03-19 At&T Bell Laboratories Bistable liquid crystal twist cell
JPS5770520A (en) * 1980-10-20 1982-05-01 Hitachi Ltd Liquid crystal element
JPS57133438A (en) * 1981-02-13 1982-08-18 Hitachi Ltd Liquid crystal display device
FR2526177B1 (en) * 1982-04-28 1984-09-14 Centre Nat Rech Scient
JPS5923328A (en) * 1982-07-29 1984-02-06 Sharp Corp Liquid crystal display device

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040021818A1 (en) * 1966-05-09 2004-02-05 Yuka Utsumi Active matrix type liquid crystal display apparatus
US5044735A (en) * 1985-11-29 1991-09-03 Konishiroku Photo Industry Co., Ltd. Liquid crystal display device for providing sufficiently high contrast ratio and excellent response time
US4923286A (en) * 1986-02-27 1990-05-08 Asulab S.A. Display cell
US5099345A (en) * 1987-03-10 1992-03-24 Sharp Kabushiki Kaisha Colored liquid-crystal display device having supertwisted nematic liquid crystal and color filters
US4957349A (en) * 1987-04-06 1990-09-18 Commissariat A L'energie Atomique Active matrix screen for the color display of television pictures, control system and process for producing said screen
US4999619A (en) * 1987-06-10 1991-03-12 U.S. Philips Corporation Electro-optic display device for use in the reflection mode
US4906073A (en) * 1987-07-29 1990-03-06 Hitachi, Ltd. Liquid crystal display device using nematic liquid crystal having twisted helical structure and a phase correction plate
US4941737A (en) * 1987-10-07 1990-07-17 Sharp Kabushiki Kaisha Liquid-crystal display device using twisted nematic liquid crystal molecules
US4973137A (en) * 1987-11-04 1990-11-27 Sharp Kabushiki Kaisha Liquid crystal display device with compensation layers
US4904060A (en) * 1987-11-23 1990-02-27 Asulab, S.A. Liquid crystal display cell having a diffusely-reflective counter electrode
US5119220A (en) * 1988-01-28 1992-06-02 Sanyo Electric Co., Ltd. Liquid crystal display device with a phase plate for shadow compensation
US4936654A (en) * 1988-01-28 1990-06-26 Sanyo Electric Co., Ltd. Liquid crystal display device
US5105289A (en) * 1988-07-14 1992-04-14 Seiko Epson Corporation Reflection type electrooptical device and a projection type display apparatus using the same
US5153568A (en) * 1988-07-21 1992-10-06 Proxima Corporation Liquid crystal display panel system and method of using same
US5302946A (en) * 1988-07-21 1994-04-12 Leonid Shapiro Stacked display panel construction and method of making same
US5058998A (en) * 1988-09-16 1991-10-22 Casio Computer Co., Ltd. Liquid crystal display devide with a twisted alignment state
US5054910A (en) * 1988-10-04 1991-10-08 Sharp Kabushiki Kaisha Projection apparatus
US5876626A (en) * 1988-10-20 1999-03-02 Merck Patent Gesellschaft Mit Beschrankter Haftung Supertwist liquid crystal display
US5071228A (en) * 1988-12-24 1991-12-10 Nokia Unterhaltungselektronik Black-white liquid crystal display having an insulation layer for blocking the diffusion of sodium ions from the glass of the cell plate to the polyphenylene of the orientation layer
USRE36654E (en) * 1989-03-28 2000-04-11 In Focus Systems, Inc. Stacked LCD color display
US4917465A (en) * 1989-03-28 1990-04-17 In Focus Systems, Inc. Color display system
US4991924A (en) * 1989-05-19 1991-02-12 Cornell Research Foundation, Inc. Optical switches using cholesteric or chiral nematic liquid crystals and method of using same
US5050965A (en) * 1989-09-01 1991-09-24 In Focus Systems, Inc. Color display using supertwisted nematic liquid crystal material
US5093741A (en) * 1989-10-06 1992-03-03 Kabushiki Kaisha Toshiba Liquid crystal display device
US5089810A (en) * 1990-04-09 1992-02-18 Computer Accessories Corporation Stacked display panel construction and method of making same
US20110019112A1 (en) * 1991-02-21 2011-01-27 Gene Dolgoff Projection System with Enhanced Brightness
US5184156A (en) * 1991-11-12 1993-02-02 Reliant Laser Corporation Glasses with color-switchable, multi-layered lenses
US5696570A (en) * 1992-04-16 1997-12-09 Merck Patent Gesellschaft Mit Beschrankter Haftung TN cell having improved display of grey shades
US5327269A (en) * 1992-05-13 1994-07-05 Standish Industries, Inc. Fast switching 270° twisted nematic liquid crystal device and eyewear incorporating the device
US20040080694A1 (en) * 1992-06-30 2004-04-29 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device
US7567320B2 (en) * 1992-06-30 2009-07-28 Semiconductor Energy Laboratory Co., Ltd. Electro-optical device with liquid crystal
US5619356A (en) * 1993-09-16 1997-04-08 Sharp Kabushiki Kaisha Reflective liquid crystal display device having a compensator with a retardation value between 0.15 μm and 0.38 μm and a single polarizer
US5432624A (en) * 1993-12-03 1995-07-11 Reliant Technologies, Inc. Optical display unit in which light passes a first cell, reflects, then passes a second cell
US5550664A (en) * 1993-12-24 1996-08-27 Sharp Kabushiki Kaisha Liquid crystal display device
US6258443B1 (en) 1994-09-28 2001-07-10 Reflexite Corporation Textured retroreflective prism structures and molds for forming same
US5579142A (en) * 1994-10-14 1996-11-26 Sharp Kabushiki Kaisha Liquid crystal display device having pleochroic dye and particular relationship of ratio d/po and twist angle
US5986732A (en) * 1995-01-23 1999-11-16 Asahi Glass Company Ltd. Color liquid crystal display apparatus
US6229587B1 (en) 1995-01-23 2001-05-08 Asahi Glass Company Ltd. Color liquid crystal display apparatus
US6094252A (en) * 1995-09-05 2000-07-25 Sharp Kabushiki Kaisha GH LCD having particular parameters and characteristics
US7209211B2 (en) * 1995-10-23 2007-04-24 Hitachi, Ltd. Active matrix type liquid crystal display apparatus
US20060087482A1 (en) * 1995-10-23 2006-04-27 Yuka Utsumi Active matrix type liquid crystal display apparatus
US7433012B2 (en) 1995-10-23 2008-10-07 Hitachi, Ltd. Active matrix type liquid crystal display apparatus
US20090040438A1 (en) * 1995-10-23 2009-02-12 Yuka Utsumi Active Matrix Type Liquid Crystal Display Apparatus
US7684005B2 (en) 1995-10-23 2010-03-23 Hitachi, Ltd. Active matrix type liquid crystal display apparatus
US6727968B1 (en) * 1997-10-08 2004-04-27 Hewlett-Packard Development Company, L.P. Liquid crystal device alignment
US6714276B2 (en) * 2000-02-08 2004-03-30 Sharp Kabushiki Kaisha Liquid crystal display device

Also Published As

Publication number Publication date Type
DE3423993C2 (en) 1988-06-23 grant
FR2549268B1 (en) 1985-12-13 grant
KR850001438A (en) 1985-03-18 application
GB2143336A (en) 1985-02-06 application
EP0131216B1 (en) 1987-10-28 grant
GB2143336B (en) 1987-04-01 grant
CA1242784A (en) 1988-10-04 grant
US4634229A (en) 1987-01-06 grant
FR2549268A1 (en) 1985-01-18 application
DE3467044D1 (en) 1987-12-03 grant
EP0131216A2 (en) 1985-01-16 application
US4697884A (en) 1987-10-06 grant
KR900008064B1 (en) 1990-10-31 grant
NL8402189A (en) 1985-02-01 application
GB8417776D0 (en) 1984-08-15 application
CA1242784A1 (en) grant
DE3423993A1 (en) 1985-01-24 application
EP0131216A3 (en) 1985-03-13 application

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Legal Events

Date Code Title Description
RR Request for reexamination filed

Effective date: 19900117

B1 Reexamination certificate first reexamination
FPAY Fee payment

Year of fee payment: 4

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